[sclevine]

The presentation to the CNCF TOC covers some of the technical details: https://www.youtube.com/watch?v=uDLa5cc-B0E&feature=youtu.be

Some key points:

- CNBs can manipulate images directly on Docker registries without re-downloading layers from previous builds. The CNB tooling does this by remotely re-writing image manifests and re-uploading only layers that need to change (regardless of their order).

- CNB doesn't require a Docker daemon or `docker build` if it runs on a container platform like k8s or k8s+knative. The local-workstation CLI (pack) just uses Docker because it needs local Linux containers on macos/windows.